With IPHost Network Monitor you can run simple snmp requests against a Cisco device in your network.
rttMonLatestJitterOperRTTMin
Round Trip Time Monitor Latest Jitter Operational RTT Minimum
1.3.6.1.4.1.9.9.42.1.5.2.1.4
The minimum of RTT's that were successfully measured.
Back to CISCO-RTTMON-MIB MIB page.
IPHost Network monitor allows you to monitor rttMonLatestJitterOperRTTMin on Cisco device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Cisco multiplexers right now.